Rolando Gelabert

• Dr.
• Universidad Autónoma del Carmen

This study focused on spatial-temporal variations in the composition and structure of polychaete communities associated with two coexisting oyster species in a southern Gulf of Mexico coastal lagoon, showed that Crassostrea rhizophorae hosted 23 polychaete species and C. virginica only four. The observed variability was mainly explained by differen...

Rodríguez-Santiago, M.A., Iannacone, J., Canche-Tun C.R., Ávila E., Aznar-Chulin E.G., Alvariño-Flores L., Argota-Pérez G. & Gelabert-Fernández R. (Eds). 2023. XI Congreso Internacional de Parasitología Neotropical, IV Simposio de Ictioparasitología Neotropical, I Simposio de Leishmaniasis en el Neotrópico, I Simposio de Fitoparasitología Neotropic...

Mangroves are coastal wetlands with high biodiversity and productivity, with great interaction with coastal environments. In the face of worldwide mangrove loss, restoration projects attempt to recover ecosystem composition and functioning over time. Our objective was to examine and compare the food webs in mangrove areas with different restoration...

Background. In Mexico, few studies have been carried out on epibiosis. Epizoic diatoms are used as biological indicators of ecosystems due to their apparent epibiont specificity with host animals. Little is known about this specificity in the planktonic larval phases. There have been no studies focused on epizoic diatoms on the marine gastropod Ali...

The present study evaluated the ecological response of fish fauna to hydrological restoration in a mangrove area in Terminos Lagoon in the Gulf of Mexico. In two years, environmental parameters and ichthyofauna were obtained in a channel under restoration and a conserved channel. The fish fauna was composed of 12 species. As a result of the restora...

The aims of this study were to determine whether the prevalence of the parasitic isopod Bopyrina abbreviata Richardson, 1904 in the decapod Hippolyte zostericola Smith, 1873, varies intra-annually in the estuarine lagoon system of the Natural Protected Area Laguna de Terminos (Mexico) and whether this variability was related to changes in environme...

Abstract: In estuaries, sponges constitute an integral part of marine benthic communities, but there is still insufficient information about their reproductive cycle in these coastal environments. In this study, the sexual reproduction period of the sponge Haliclona (Reniera) implexiformis and its association with intra-annual fluctuations of wat...

Globally, oxygen concentration in many coastal areas is depleting. River nutrient discharges may produce hypoxia events. The Southern Gulf of Mexico receives the discharges of the Grijalva-Usumacinta River System, the second largest in the Gulf of Mexico. To evaluate the influence of river discharges on dissolved oxygen concentrations in the receiv...

Abstract Fish harbor a high diversity of parasites that play an important role for the ecosystem. Because these parasites have different life-cycle traits, changes in their populations or communities may provide useful information related to ecosystem health. Highly stressful conditions may reduce parasite communities or populations. However, it is...

The knowledge about the weight, length and condition factor of the organisms is key for explaining the population dynamics in wild animals. The present study was focused on finding the model that best explains the length-weight relationships in epibenthic and juveniles of Farfantepenaeus duorarum, as well as the condition factor during the differen...

The pink shrimp, Farfantepenaeus duorarum is an important commercial species in the Gulf of Mexico, which supports significant commercial fisheries near Dry Tortugas, in Southern Florida and in Campeche Sound, Southern Gulf of Mexico. There is information about the nictemeral behavior of the pink shrimp related to sunset, what is crucial to more ac...

This study has been focused on evaluating the sexual reproductive cycle of the sponge Haliclona implexiformis, one of the most common species in seagrass bed habitats in the estuarine ecosystem of the Laguna de Terminos, Campeche, Mexico. Through a monthly collection of 10 adult specimens (from May 2012 to December 2013), the number of eggs or larv...

Artificial foods have been proposed in aquaculture as a complement or substitute for live food and the quality has been evaluated by considering nutritional value, acceptability, digestibility and water stability, but because of the filter-feeding behaviour of larvae of the cultured shrimp and the diversity of food found in the market for larvicult...

The present research was carried out to explore the ability of Clitoria ternatea to incorporate nutrients into soils. There are just few studies about native species in Mexico. Clitoria plays an important ecological role by providing favorable conditions for soil restoration in forest areas after forest fires occurrence. In agriculture, Clitoria sp...

Abstract Because of the filter-feeding behavior of shrimp larvae, it is important to define precisely the size of the particle ingested in the different stages until postlarval stage where raptorial habits are more evident than the filter-feeding lifestyle. Selectivity assays were conducted by using Polystyrene DVB particles with diameter between 1...

The effect of six diets with a different plant protein content on the growth of Cichlasoma urophthalmus fingerlings, was determined. Isoenergetic and isolipidic diets with a protein content of 10% to 60% were formulated using soybean and wheat gluten as the main protein sources. The treatments did not affect survival, which was above 80% in all cas...

Se determinó el efecto de seis dietas con diferente contenido de proteína de origen vegetal sobre el crecimiento de alevines de Cichlasoma urophthalmus. Se utilizaron dietas isoenergéticas e isolipídicas con contenido de proteína entre 10% y 60 %, empleando soya y gluten de trigo como las principales fuentes proteicas. Los tratamientos no afectaron...

This study was conducted to determine the effectiveness of scarification treatments in the germination of Crotalaria retusa to propose an effective and practical method for breaking seed dormancy. Seeds were collected on December 2009 from disturbed forests in coastal dunes and tested with different times of exposure (0, 5, 10, 20 and 30 min) to su...

Artemia is not believed to be a selective filter-feeding organism; however, evidence of an influence of the size of the nutrient particles on the filtration process of this crustacean is presented. To evaluate the influence of the size of food on the filtration process, assays with latex particles and with starch granules were made. A relation betw...

Se estimó el crecimiento (incremento en peso seco), la supervivencia y la resistencia a un estrés salino en postlarvas de Litopenaeus vannamei alimentadas con nauplios enriquecidos de Artemia franciscana (Kellog, 1906). Se estudiaron los estadios de PL 5 a PL 10 , de PL 10 a PL 30 , y de PL 20 a PL 40 . Las dietas consistieron en: 1) nauplios de A....

Growth (dry weight increase), survival and resistance to saline stress were estimated for Litopenaeus vannamei postlarvae fed enriched Artemia franciscana (Kellog, 1906) nauplii. Stages PL5 to PL10, PL10 to PL30, and PL20 to PL40 were studied. Diets consisted of: 1) A. franciscana nauplii enriched with an emulsion of soybean lecithin and cod liver...

To assess the health status of aquatic ecosystems, specialized tools and strategies are needed to study the changes induced in oceanic systems by human activity. The Gulf of Mexico has a tremendous ecological importance because of its biological diversity. The present paper defines baseline levels of blood metabolites and immune components for wild...

In an attempt to know how the protein level modulates catabolism and its effects on the immune response, we studied juvenile L. vannamei that had been starved for varying period after being conditioned on diet containing either maintenance or optimal dietary protein levels (DPL). The effect of dietary protein level on nutritional reserves managemen...

Los efectos del níquel y el zinc se estudiaron, a diferentes concentraciones, sobre la eclosión de quistes de Artemia franciscana, la mortalidad de los nauplios, el crecimiento y el consumo de oxígeno para determinar los niveles de toxicidad aguda y crónica. El porcentaje de eclosión de los quistes disminuyó significativamente en concentraciones de...

Constant environmental changes in oceanic and estuarine systems due to human activity in coastal zones require different tools and strategies for their study to be able to assess the health status of aquatic ecosystems. The Gulf of Mexico has a tremendous ecological importance because of its biological diversity. Baseline levels of blood metabolite...

The amounts of energy channeled into growth (P), maintenance (R), excretion (U) and exuviae (Ev) were quantified in six dietary treatments during early postlarval development in Litopenaeus setiferus and Litopenaeus vannamei reared at 28±1 °C and 35±1‰ salinity. The six diet combinations were: (1) freshly hatched Artemia nauplii, (2) freshly hatche...

Se evaluó el crecimiento de diversos estadios larvales de Artemia franciscana alimentada con las microalgas Tetraselmis suecica y Chaetoceros muelleri solas o combinadas en diferentes proporciones. Cinco dietas fueron estudiadas por triplicado durante 10 días. A partir de la etapa de metanauplio II, se observaron diferencias significativas (P<0.05)...

Available information about bioencapsulation in Artemia indicates that there is no agreement about the food concentrations to fulfill this objective. In this study, experiments with 15 different concentrations of 5 μm diameter latex particles were made. The behavior of different size classes of animals analyzed is shown with results stating that th...

This study deals with some aspects about the influence of partially substituting the traditional food given to shrimp for Artemia franciscana adults. It was seen that the biomass of A. franciscana fed with Spirulina maxima benefits L. setiferus female maturation (eggs/spawning), when used as substitute for the 10% daily ration of traditional feed....

Artemia is not believed to be a selective filter-feeding organism; however, evidence of an influence of the size of the nutrient particles on the filtration process of this crustacean is presented. To evaluate the influence of the size of food on the filtration process, assays with latex particles and with starch granules were made. A relation betw...